(12) Number our days.--This verse as it stands literally gives to allot, or in allotting (see Isaiah 65:12), our days, so teach, and we will cause to come the heart wisdom. The last clause, if intelligible at all, must mean "that we may offer a wise heart," and the natural way to understand the verse is to make God, not man, as in the Authorised Version, the reckoner of the days. "In allotting our days thus make us know (i.e., make us know the power of Thine anger), in order that we may present a wise heart."

The verse must evidently be taken in close connection. with the preceding, or the point of the petition is lost, and though the ordinary rendering, "Teach us to number our days," has given birth to a number of sayings which might be quoted in illustration, it is neither in itself very intelligible, nor, except by one instance in later Hebrew, can it be supported as a rendering of the original.

Verses 12-17. - From complaint the psalmist, in conclusion, turns to prayer - prayer for his people rather than for himself. His petitions are,

(1) that God will enable his people to take to heart the lessons which the brevity of life should teach (ver. 12);

(2) that he will cease from his anger, and relent concerning them (ver. 13);

(3) that he will once more shower his mercies upon them, and cause their affliction to be swallowed up in gladness (vers. 14, 15);

(4) that he will show his glorious doings to them and to their children (ver. 16);

(5) that he will let his beauty rest upon them (ver. 17); and

(6) that he will bless their doings, and establish them (ver. 17). Verse 12. - So teach us to number our days, that we may apply our hearts unto wisdom. "Teach us," that is, "so to reflect on the brevity of life, that we may get to ourselves a heart of wisdom," or a heart that is wise and understanding.

90:12-17 Those who would learn true wisdom, must pray for Divine instruction, must beg to be taught by the Holy Spirit; and for comfort and joy in the returns of God's favour. They pray for the mercy of God, for they pretend not to plead any merit of their own. His favour would be a full fountain of future joys. It would be a sufficient balance to former griefs. Let the grace of God in us produce the light of good works. And let Divine consolations put gladness into our hearts, and a lustre upon our countenances. The work of our hands, establish thou it; and, in order to that, establish us in it. Instead of wasting our precious, fleeting days in pursuing fancies, which leave the possessors for ever poor, let us seek the forgiveness of sins, and an inheritance in heaven. Let us pray that the work of the Holy Spirit may appear in converting our hearts, and that the beauty of holiness may be seen in our conduct.So teach us to number our days,.... Not merely to count them, how many they are, in an arithmetical way; there is no need of divine teachings for that; some few instructions from an arithmetician, and a moderate skill in arithmetic, will enable persons not only to count the years of their lives, but even how many days they have lived: nor is this to be understood of calculating or reckoning of time to come; no man can count the number of days he has to live; the number of his days, months, and years, is with the Lord; but is hid from him: the living know they shall die; but know not how long they shall live, and when they shall die: this the Lord teaches not, nor should we be solicitous to know: but rather the meaning of the petition is, that God would teach us to number our days, as if the present one was the last; for we cannot boast of tomorrow; we know not but this day, or night, our souls may be required of us: but the sense is, that God would teach us seriously to meditate on, and consider of, the shortness of our days; that they are but as a shadow, and there is no abiding; and the vanity and sinfulness of them, that so we may not desire to live here always; and the troubles and sorrows of them, which may serve to wean us from the world, and to observe how unprofitably we have spent them; which may put us upon redeeming time, and also to take notice of the goodness of God, that has followed us all our days, which may lead us to repentance, and engage us in the fear of God:

that we may apply our hearts unto wisdom; to consider our latter end, and what will become of us hereafter; which is a branch of wisdom so to do; to seek the way of salvation by Christ; to seek to Christ, the wisdom of God, for it; to fear the Lord, which is the beginning of wisdom; and to walk circumspectly, not as fools, but as wise; to all which an application of the heart is necessary; for wisdom is to be sought for heartily, and with the whole heart: and to this divine teachings are requisite, as well as to number our days; for unless a man is taught of God, and by his Spirit convinced of sin, righteousness, and judgment, he will never be concerned, in good earnest, about a future state; nor inquire the way of salvation, nor heartily apply to Christ for it: he may number his days, and consider the shortness of them, and apply his heart to folly, and not wisdom; see Isaiah 22:21.